Zach Haynes, left, and Scott Brown eat lunch at Bomber’s Drive-Thru in Richland, Wash. The two are contract pipe fitters who were locked down for four hours at Hanford on Tuesday. (Young Kwak/For The Washington Post)

Former Hanford nuclear process operator Lonnie Rouse looks through files for documents related to his illnesses at his house in Pasco, Wash. Rouse claims that he became ill after working at the facility. (Young Kwak/For The Washington Post)

A welcome sign is photographed at the Hanford nuclear site, in Washington state on Wednesday. The collapse of a tunnel storing contaminated materials on Tuesday forced a lockdown at the facility. (Young Kwak/For The Washington Post)

Students run in the gym at Richland High School in Richland, Wash. 2017. (Young Kwak/For The Washington Post)